Tool-feed for planing-machines.



PATBNTED MAY 15, 1906.

F. HARRINGTON & G. L. SMITH. TOOL FEED FOR PLANING MACHINES.

APPLICATION TILED DEG-13' 1904.

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No. 820,416. PATENTED MAY 15, 1906. F. HARRINGTON & G. L. SMITH.

TOOL FEED FOR PLANING MACHINES.

APPLICATION nun DEG.13. 1904.

' 2 SHEETS-SHEET 2.

UNITED STATES- FRANK HARRINGTON AND CHARLES L. SMITH, or HARTFORD, ooNNEoTI PATENT oRFioR.

CUT, ASSIGNORS TO THE SIGOURNEY TOOL COMPANY, OF HARTFORD, CONNECTICUT, A JOINT STOCK CORPORATION OF CONNECTICUT.

Specification of Letters Patent.

Patented May 15, 1906.

Application filed December TS, 1904. Serial No. 236.742.

To all whom it may concern:

Be it known that we, FRANK HARRINGTON and CHARLES L. SMITH, citizens of the United States, residing at Hartford, in the county of Hartford and State of Connecticut, have invented a new and useful Tool-Feed for Planing-Machines, of which the following is a specification.

This invention relates to the mechanism which is used on a planing-machine for feeding the cutting-tool transversely and vertically above the bed.

The object of the invention is to provide such feed mechanism with an index whereby the lane of the vertical feed can be accurate y determined and with a simple shipper device which can be easily and quickly manipulated for changing from a vertical to a horizontal feed, and vice versa, and which looks the parts against accidental change.

The embodiment of the invention illustrated has an index adjustably connected with the horizontal-feed-screw stem whereby the horizontal position of the tool canbe accurately determined and a shipper-handle pivoted to a bracket fastened to the cross-head and connected, by means of a pin and slot, with the shipper-lever in such manner that the movement of the handle first unlocks, then throws, and finally locks the shipperlever in the position to which it is thrown.

Figure 1 of the accompanying drawings shows a front elevation of a portion of the cross-head with the shipping mechanism. Fig. 2 shows a plan of the same. Fig. 3 shows a side elevation of the shipping mechanism. Fig. 4 shows a side elevation of the ratchet, the ratchet-gear, the vertical-feed gear, the horizontal-feed gear, the shipperpinion, the shipper-lever, and handle for throwing and locking the ship er-lever. Fig. '5 shows an enlarged section 0 the index and the means for connecting it with the stem of the horizontal-feed screw. Fig. 6 shows a vertical section taken through the feedratchet.

Only a portion of one end of the cross-head is shown. This cross-head 1 is of the usual construction and is supported by the vertical frame, so that it may be moved up and down in the usual way. The cross-head supports the ordinary saddle, which moves horizontally on the head and which carries the swivel and swivel-slide, which holds the cutting-tool. These parts are not shown, for they are common to the planers in general use and are well known to those familiar with such machines.

The horizontal-feed screw 2 is supported by the cross-head in the usual manner. This screw is designed to feed the saddle horizontally along the cross-head. On the stem of the feed-screw is the horizontal-feed gear 3. Above the horizontal-feed screw is the ve'r-' tical-feed rod 4. This rod is supported by the cross-head in the usual manner and bears a beveled gear 5, which is utilized to give a vertical movement to the swivel-slide, which. is carried by the saddle. On the end of this feed-rod is the vertical-feed gear 6.

Pivotally supported by the bracket 7, which is fastened to the back of the crosshead, is the shipper-lever 8. j ecting from one end of the shipper-lever, is the shipper-pinion 10. The shipper-pinion is carried into mesh with either the verticalfeed gear, as shown in Fig. 3, or the honzontal-feed gear, as shown in Fig. 4, by the movement of the shipper-lever.

Extending through the hub of the shipperlever and the bracket is a shaft 11. Keyed to this shaft is the driving-gear 12, in mesh with which iszthe feed-rack 1 3, Fig. 2. Loosely mounted on the shaft is the ratchet-gear 14. This gear meshes with the shipper-p1n1on, and mounted upon and keyed to the hub of this gear is the ratchet-wheel 15 Fig. 6. On the end of the shaft adjacent to the ratchetwheel is an arm 16'. This arm is clamped to the shaft by the clamp-screw 17, and on ts free end carries a double-feed pawl 18, which may be turned over in either direction into enga ement with the teeth of the ratchetwhee Pivoted to the cross-head below the ratchet-wheel is a double drag-pawl 19, which may be turned in either direction into engage- 'ment with the teeth of the ratchet-wheel.

The vertical reciprocation of the rack through the feed-gear oscillates the shaft and the arm bearing the feed-pawl. This gives an intermittent movement to the ratchetwheel and ratchet-gear in a direction depending upon which way the feed-pawl-is turned, and this intermittent movement is transmitted from the ratchet-gear through the shipper-pinion to either the vertical-feed gear On a pin 9, proor the horizontal -feed gear, according to which of these gears the shipper-pinion is engaging.

Pivoted on a pin 20, which projects from the bracket that is fastened to the back of the cross-head, is the handle 21. Extending from the handle into a slot 22 in the shipper-lever is a pin 23. Turning over this handle from one side to the other causes the pin to throw the shipper-lever and swing the shipper-pinion to either the vertical-feed gear or the horizontal-feed gear. The slot and pin are so arranged that when the handle is at rest the shipper-lever cannot move of its own initiative or be moved accidentally from the position it occupies-that is, the pin locks the shi er in position.

"hen the handle is turned over, the pin moves so as to first unlock the shipper-lever. The continued movement of the pin throws the shipper-lever and then swings into such position as to again lock the shipper-la ver.

Loosely mounted on the stem of the horizontal-feed screw is an index-disk 24, the periphery of which is preferably graduated, so that a movement of the disk one graduation indicates a horizontal movement of the tool of one one-thousandth of an inch. Adjacent to the inside of the index-disk'is an arm 25, projecting from a bracket 26, which is fastened to the cross-head. This arm, which is fixed, is utilized to indicate the movement of the index-disk.

In transverse sockets in the stem of the horizontal-feed screw inside of the index-disk are a pair of laterally-thrusting pins 27, that have inclined inner ends, and engaging with these inclined ends is the tapering end of a wedge 28, that is arranged to move horizontally in an opening in the end of the stem of the horizontal-feed screw. This wedge is driven in by a thumb-screw 29. When the thumb-screw is turned to drive the wedge in, the pins are forced outwardly and bind the index to the stem of the feed-screw. When the thumb-screw is loosened, the index is free to be turned on the stern of the feed-screw.

Keyed to the end of the stem of the horizontal-feed screw is a crank-handle 30.

When the vertical feed is being used, the horizontal position of the tool may be accurately determined by means of the index and the indicating-arm. If it is desired to move the tool so its vertical plane will be more or less one way or the other, an absolutely accurate movement can be obtained by first setting the index and then moving the horizontal-feed screw by means of the crank-handle until the index registers the desired amount of movement.

The invention claimed is 1. A feed for a planer-tool having a horizontal-feed screw, a gear on the horizontalfeed screw, a vertical-feed rod, a gear on the vertical-feed rod, a ratchet, a gear connected with the ratchet, a pawl for giving the ratchet a rotary movement, a shipper-lever, a shipper-pinion carried by the shipper-lever and meshing with the ratchet-gear and adapted to mesh with either the vertical-feed gear or the horizontal-feed gear, a handle for moving the shipper-lever, and a pin-and-slot connection between the handle and the shipper-lever, substantially as specified.

2. A feed for a planer-tool having a horizontal-feed screw, a gear on the horizontalfeed screw, a vertical-feed rod, a gear on the vertical-feed rod, a ratchet, a gear connected with the ratchet, a pawl for giving the ratchet a rotary movement in either direction, a dragpawl arranged to prevent accidental movement of the ratchet, a shipper-lever, a shipper-pinion carried by the shipper-lever and meshing with the ratchet-gear and adapted to mesh with either the vertical-feed gear or the horizontal-feed gear, a handle for moving the shipper-lever, and a pin-and-slot connection between the handle and the shipper-lever, substantially as specified.

FRANK HARRINGTON CHARLES L. SMITH.

Witnesses:

ROBERT H. SOHUTZ, GEO. O. KIMBALL. 

